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400G QSFP-DD FR4 Optical Transceiver CWDM 2km SMF LC Duplex PAM4
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Product Highlights:
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Advanced 400G QSFP-DD FR4 transceiver utilizing 4-lane CWDM technology for 2km transmission over single-mode fiber via LC duplex connectors.
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Compliant with QSFP-DD MSA and 400G FR4 specifications, featuring PAM4 modulation and DDM for high-performance data center networking.
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Engineered for maximum fiber efficiency and scalability, providing a robust solution for 400G Ethernet and cloud infrastructure deployments.
Table of Contents
Description
The FiberMania 400G QSFP-DD FR4 optical transceiver is a sophisticated solution designed for high-density 400 Gigabit Ethernet links over single-mode fiber. This module employs a 4-lane CWDM (Coarse Wavelength Division Multiplexing) optical design, utilizing integrated MUX and DEMUX components to transmit data over four distinct wavelengths. By leveraging high-performance CWDM EML lasers and PAM4 modulation, it achieves a reliable 2km transmission distance, making it the preferred choice for data center interconnects that require a balance between reach and fiber efficiency.
This transceiver is fully compliant with the QSFP-DD Multi-Source Agreement (MSA) and the 100G Lambda MSA, ensuring broad interoperability with next-generation switching platforms. It features an 8×53.125Gb/s electrical interface (400GAUI-8) and uses a standard LC duplex connector, allowing operators to utilize existing single-mode fiber infrastructure. With its built-in Digital Diagnostic Monitoring (DDM) and optimized power management, the module provides a robust, scalable, and energy-efficient pathway for cloud service providers and enterprise networks to migrate to 400G architectures.
Specification
| Form Factor | QSFP-DD |
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| Data Rate | 425 Gbps |
| Wavelength | CWDM4 (1271, 1291, 1311, 1331nm) |
| Fiber Type | Single-mode Fiber (SMF) |
| Max Distance | 2 km (with FEC) |
| Optical Connector | LC Duplex |
| Electrical Interface | 400GAUI-8 |
| Modulation | PAM4 |
| Power Consumption | Max 12W |
| Supply Voltage | 3.3V |
| DDM Support | Yes |
| Operating Temperature | 0°C to 70°C |
| Compliance | QSFP-DD MSA, 100G Lambda MSA, RoHS |
Features
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Aggregate bit rate support up to 425 Gbps
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4-lane CWDM MUX/DEMUX design on 1271, 1291, 1311, and 1331nm
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Transmission distance up to 2km over G.652 single-mode fiber with FEC
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8×53.125Gb/s PAM4 electrical interface (400GAUI-8)
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High-performance CWDM EML lasers and PIN receiver array
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LC duplex connector interface for standard SMF cabling
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Hot-pluggable QSFP-DD MSA compliant form factor
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Maximum power consumption of 12W
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Single +3.3V power supply operation
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Integrated DDM functions for real-time monitoring of optical and electrical parameters
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RoHS compliant and lead-free design
Application
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400G Ethernet data center interconnects (DCI)
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High-bandwidth campus and enterprise core networks
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5G wireless fronthaul and midhaul transport
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Cloud computing and hyperscale infrastructure backbone
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Point-to-point networking across metropolitan areas
Q&A
Q: What is the main advantage of the FR4 module compared to the DR4 module? A: The FR4 module uses CWDM technology to multiplex four wavelengths onto a single pair of fibers (LC duplex), whereas DR4 requires eight fibers (MPO-12). This makes FR4 much more fiber-efficient for 2km reaches, as it saves significant cabling infrastructure costs.
Q: Is Forward Error Correction (FEC) required for this transceiver to reach 2km? A: Yes, the 2km transmission distance is achieved using host-side FEC (Forward Error Correction). This is standard for 400G PAM4 optics to ensure a bit error rate (BER) that meets networking standards.
Q: Can FiberMania customize the compatibility for different switch vendors like Cisco, Arista, or Juniper? A: Yes. FiberMania specializes in OEM services where we provide custom-coded EEPROMs to ensure 100% compatibility with specific host platforms. We can also provide custom labeling and packaging to fit your brand’s requirements.
Q: How does FiberMania handle quality control for high-speed 400G optics? A: Each module undergoes rigorous testing, including eye-diagram analysis, BER testing, and thermal cycling. As an OEM manufacturer, we prioritize consistency to ensure that every unit delivered under your brand meets the highest performance benchmarks.
Quality Qulifications and Compliance
To get the detailed certification, please go to the Compliance.
Please Note: Our products comply with all internationally recognized and industry-standard specifications. For customized or special requirement products, we carry out testing and standards in accordance with the conformity criteria specified in the contract.
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